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	<title>数组对象一些属性的应用</title>
	<script type="text/javascript">
				arr=[2321312,321,321,512,3,12412,512,5164756];

				// arr.push(22);

				// arr.unshift(23415);

				// arr.pop();

				// arr.shift;

				// arr.splice(2,3,22);
				 
				// res=arr.slice(3,5)
				
				// res=arr.join("%");

				res=arr.concat(3,4,5);

				alert(res);




	</script>
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